Just wanted share this little cable in case anyone here might need one. This OTG Y cable allows me to use my Samsung Android (S3, S4, Note 2) with a DSLR app controlling the Canon camera by USB cable, and also allows phone to be charged at the same time via wall charger or portable charging pack. I got this because I noticed the battery drain on my phone was fierce when shooting for a long time.
Valarm OTG -Y Cable